Oaed grinding machine



(No Model.) 1 2 Sheets-Sheet 1.

' B. S. ROY.

CARD GRINDING MAGHINE. No. 276,884. Patented May1,1883.

e 666 Y fin/622207" JJQO (No Model.)

7 2 Sheets-Sheet 2. B. S; ROY. CARD GRINDING MACHINE.

Patented May 1, 1883.

wz'hiesaes,

N. PEI'EI'IS. Photo-Lithographer. Wuhington. D.C

UNITED STATES:

PATENT Qrrirce.

BOZIL S. ROY, OF WORCESTER, MASSACHUSETTS.

CARD-GRINDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 276,884, dated May 1, 1883,

Application filed November 27, 1882.

use the same, reference being had to the ac-' companying drawings, which form a part of this specification. I

This present invention relates to grinders for cotton-cards, the principal objects of my improvements being to provide an apparatus whereby self-stripper flats or the bars of automatic card -strippers can be conveniently ground and a convex curvature imparted to the faces thereof. so that the form' of their working-faces will correspond to their curve of motion when the self-stripperis in operation a on the carding-machine, thus enabling the entire face of the stripper-slat to be brought into proper working relation with the surface of the card-flats whereon itis operating, and the stripping operation thereby performed in a more thorough, economic, and satisfactory manner; to afford means for operating the card-flat supporters in a circulararc in opposite relation to the grinding-wheel, as hereinafter explained; to provide means for retaining and adjusting the card-flat supporters in relation to their carrying devices, and for setting them to proper position and preventing looseness in the guides; also, to afl'ord means for the longt tudinal vibration of the grinder-shaft by a worm,worm-wheel, and a cam, as hereinafter explained. These objects I attain by mechanism substantially such as shown in the accompanying drawings, and hereinafter described, the particular s'ubject-matter claimed being definitely specified.

In the drawings, Figure 1 is a part front, part sectional, view of a card-grindin g machine illustrating the nature of my invention. Fig. 2 is a plan view of the same, showing a topflat and a self-stripper slat in position for grinding. Fig. 3 is an end view of .the same, some of the upper portions being shown in section. Fig. 4 is a transverse section of a selfstripper slat, showing the convex curve of its face. Fig. 5 is a side view of mechanism for (No model.)

vibrating the grinder-shaft longitudinally. Figs. 6, 7, and 8 show details of construction of the supporters or heads for sustaining the stripper-slats while being ground. I

In the drawings,Aindicates the mainframe, composed of end castings and horizontal girts, formed and arranged as shown, or in a suitable manner, for supporting the operating mechanism.

B indicates a traversing grinding-wheel, (or, ifpreferred, alonggi inding-cylinder,) mounted on theshaft B, which turns in bearings b on the top of the frame. The mechanism for traversing the 'wheel B on its shaft or cylinder,having been heretofore patented, need not be herein described. Shaft B is operated by belt from the lower or driving shaft. P.

O 0 indicate the heads or pocket-boxes for supporting the top-flatsT of cardingmachines while grinding the card-teeth. Said heads are mounted on reciprocating standards 0, working in guides (Hand the pockets are adapted for regulation and adjustment by means of screws or devices organized substantially as shown and described in my Letters Patent eration upon the carding-machine, so that the entire surface of the clothing onthc self-stripper will act in stripping the cards. By grinding the face of the self-strippers convex a much wider stripper-slat can be used, it desired, than would be practical if the face were straight. The heads or holders D are arranged to move or vibrate in a circular arc of motion, or to so rock the self-stripper slat or bar, in connection with the grinding-wheel, that the grinding is performed on the proper and y desired curvature. The holders D are mounted on the inner ends of swinging arms E, the opposite ends of which are pivoted on projecting parts A of the frame A, in such relation to the wheel that the vibration or swing of the arms will indicate the curvature of the face of the slats, as desired. This curve should properly correspond with the curve on which the self-stripper Works when on the carding-machine. The pivots 0 may be made adjustable toward or from the axis of the wheel to vary the degree of curvature when it is desired to grind self-stripper slats having differentlycurved faces. The holders are made as shown in detail in Figs. 6, 7, and 8,the part D being adjustable on its support laterally of the machine, and the pocket D being adjustable, by means of screws d, to carry the stripper-slat to or from the wheel B. Said pocket D is provided with a seat for the end of the slat s, and with a set-screw, d, or equivalent means, for clamping the slatin position. E indicates a rod or brace connecting the two arms E across the machine.

The arms E and holders D are vibrated from eccentrics F on the shaft F by means of the lever G and connecting-linksH and I, said lever being fulcrumed on the frame A, with the respective links joining its ends to the operating and operated parts, substantially as illustrated in Fig. 3.

The pocket-boxes O are operated from ecceir trics F by means of the connecting-bars K, which are pivoted to the ends of the sliding standards 0, on which said holders are carried. The guides through which the sliding stand ards 0 work are titted with gibs c and screws 0, whereby the standards can be set up to a firm bearing for rigidlysustaining the holders and slat to the face of the grinding-wheel.

In some cases it is preferred to usea grinding-cylinder the full width of the card in place of the traversing grinder-wheel B. In such cases it is essential that said grinding-cylinder should have a short longitudinal vibratory action; and to effect this movement I employ the device illustrated in Fig. 5, which consists of a worm or screw, B fixed on the grinder-shaft B, and a worm-gear, N, meshing therewith and supported by a suitable hanger, N, mounted on the shaft B and moving laterally therewith. To the side of said gear N is fixed an eccentric or cam, N that works between parallel guideways 0 0, fixed on a projection or bracket, A on the main frame A, said guideways being located perpendicular, or nearly so,'to the axis of the shaft B. The shaft B is allowed lateral play in its supporting-bearings b to a distance equal to the throw of the cam N Revolution of the shaft B and worm B causes the revolution of the gear N and cam N and the action of the cam between the stationary guides 0 moves the hanger N, which, being confined by its bearings w w, embracing the worm-heads or collar, effects the movement of the shaft B longitudinally in avery simple, easy, and efficient manner. The cylinder-grinder and the traversing grinding-wheel maybe made to be in terchangeably placed in the bearings h, so that either can be used, as required.

At the front of the machine, and supported in suitable bearings projecting inward from the forward girt, is a short revoluble grindingcylinder, R, for the purpose of grinding handcards, and for similar work. Said cylinder R is operated by a belt, S, from the pulley R on the main shaft P, as indicated.

What I claim as myinvention, and desire to secure by Letters Patent, is-

1. The combination, with the traversing grinding-wheel B, of the supporting-arms E, having pocket mechanism D for holding a selfstripperslat,swinging,forregulatingthegrinding of the surface, from a pivot or center located at the position that will give a radius of action corresponding to the radius of action of the self-stripper mechanism whereon the slat or bar is to be used, substantially as and for the purpose set forth.

2. The combination of the grinding wheel or cylinder B, the swinging arms E, pivoted ate, the holders or pockets D, adjustably mounted on said arms and adapted for retaining aselfstripper slat, the operating-shaft F, having eccentrics F, and the connections H I and lever G for imparting vibratory movement to said arms, as shown and described.

3. The combination of the worm-screw B rigidly fixed on the grinder-shaft B, the hanger N, dependent from said shaft, with its boxes to w embracing the ends of the screw-hub, the worm-gear N, journa-led on said hanger and meshing with said worm-screw, the eccentric cam N fixed to and revolving with said gear, and the stationary parallel guides 0 0, embracing said cam and rigidly attached to the frame A or a projection thereon, said parts being constructed and organized for operation as hereinbefore set forth.

4. In a card-grinding machine, the combination of the grinding-wheel B, the adjustable card-flat supporters O, the reciprocating slides G, the operating-pitmen K, and the guidingbrackets 0 provided with gibs o and pressurescrews 0, said parts being constructed and arranged as herein shown, for the purposes se forth.

5. The combination of the traversing grinding wheel and shaft B B, the adjustable'snpporters 0, operating on slides U, the adjustable supporters D, operating on swinging arms E, the eccentrics F, shafts F and P, and operating-connections H, G, I, and K, substantially as shown and described.

Witness my hand this 16th day of Novemher, A. D. 1ss2.

BOZIL S. ROY. Witnesses:

CHAS. H. BURLEIGH, S. R. BARTON. 

